______________, I can make it home by 8:30 when the football game will be on TV — Well, it depends on how efficiently you work

There is still a long way to go to work out all the problems the conservation of naturalresources. [ ]

It comes as no surprise that many parents walk along their young children ____ their safety.

Sometimes I don’t have enough time ______ with my parents.—You will if you spend more time ______ with them at home.

下列各句中，加横线的成语使用正确的一项是